In a long and bitter conflict, China has been divided between hard-line Red Chinese communists and the increasingly powerful, democratic White China. The Reds are running out of options: they must strike, strike hard and strike soon. They quickly come up with a deadly plan to keep the US out of the war. China has no effective submarines. But the Japanese have the best in the world, Destiny Mk. III's, the Rising Sun class. And one daring young Red commander knows how to take them . . .

One hundred and ten US ships sail to relieve White Shanghai. With ten minutes of entering the East China Sea one hundred and ten ships lie on the ocean floor - the victims of captured Destinys.

If an American victory is to be gained, the East China Sea must be swept clean of the super-advanced Chinese subs. Admiral Michael Pacino is the one man who can do it, but if he is to have any chance, he will have to use America's most powerful, ultra-secret and still rather unreliable sub, the SSNX.